View Full Version : Lapping the Barrel ?

12-05-2005, 5:07 PM
I was planning on Lapping my .223 barrel on my H&R Ultra.
What grit compound do I use.

12-05-2005, 5:46 PM
I was planning on Lapping my .223 barrel on my H&R Ultra.
What grit compound do I use.

Here is a good overview: http://www.snipershide.com/ubb/ultimatebb.php?ubb=get_topic;f=17;t=001713#000000

12-05-2005, 6:12 PM
Thanks C.G.:
That was very helpful:)

12-05-2005, 6:29 PM
What is a VFG felt pellet ?

12-05-2005, 6:57 PM
Thanks C.G.:
That was very helpful:)

No worries.:)

12-05-2005, 9:19 PM
Some words of wisdom from Gale McMillan posted originally at TFL when he was alive. I'm not from the lapping camp either.

Posted: 09-25-1999 10:10
The break in fad was started by a fellow I helped get started in the barrel business . He started putting a set of break in instructions in ever barrel he
shipped. One came into the shop to be installed and I read it and the next time I saw him I asked him What was with this break in crap?. His answer
was Mac, My share of the market is about 700 barrels a year. I cater to the target crowd and they shoot a barrel about 3000 rounds before they
change it. If each one uses up 100 rounds of each barrel breaking it in you can figure out how many more barrels I will get to make each year. If you
will stop and think that the barrel doesn't know whether you are cleaning it every shot or every 5 shots and if you are removing all foreign material that
has been deposited in it since the last time you cleaned it what more can you do? When I ship a barrel I send a recommendation with it that you clean it
ever chance you get with a brass brush pushed through it at least 12 times with a good solvent and followed by two and only 2 soft patches. This
means if you are a bench rest shooter you clean ever 7 or 8 rounds . If you are a high power shooter you clean it when you come off the line after 20
rounds. If you follow the fad of cleaning every shot for X amount and every 2 shots for X amount and so on the only thing you are accomplishing is
shortening the life of the barrel by the amount of rounds you shot during this process. I always say Monkey see Monkey do, now I will wait on the
flames but before you write them, Please include what you think is happening inside your barrel during break in that is worth the expense and time you
are spending during break in

Posted: 09-25-1999 07:52 PM
I answered this and lost it on transfer so will shorten this one and try to get my point across in fewer words. When some one uses JB on one of my
rifles I void the warrantee! For two reasons. ! it dimensionally alters the barrel dimensions and not evenly and the second reason is the barrel maker
laps the barrel with a grit of lapping compound that is most effective in preventing metal fouling. Then a customer polishes that finish away with JB.
I wouldn't be as apposed to it if it were applied on a lead lap and very sparingly. It is very obvious when you look at a barrel with a bore scopes all the
sharp edges are worn off the rifling. if it has JB used on it on a regular basis. As you know ,it is an abrasive of about 1000 grit. As for using it on
factory barrels I will say that while it is difficult to hurt a production barrel but the thing that hurts a match barrel will do the same to a factory barrel